| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Eduardo Valentin | 4088 | 58.63% | 2 | 5.41% |
| Hans Verkuil | 2089 | 29.96% | 8 | 21.62% |
| Sebastian Reichel | 380 | 5.45% | 5 | 13.51% |
| Dinesh Ram | 192 | 2.75% | 4 | 10.81% |
| Jarkko Nikula | 141 | 2.02% | 1 | 2.70% |
| Javier Martinez Canillas | 41 | 0.59% | 1 | 2.70% |
| Mauro Carvalho Chehab | 10 | 0.14% | 3 | 8.11% |
| Julia Lawall | 7 | 0.10% | 1 | 2.70% |
| Dan Carpenter | 6 | 0.09% | 1 | 2.70% |
| Uwe Kleine-König | 4 | 0.06% | 2 | 5.41% |
| Tejun Heo | 3 | 0.04% | 1 | 2.70% |
| Paul Gortmaker | 2 | 0.03% | 1 | 2.70% |
| Thomas Gleixner | 2 | 0.03% | 1 | 2.70% |
| Axel Lin | 2 | 0.03% | 1 | 2.70% |
| Gustavo A. R. Silva | 2 | 0.03% | 1 | 2.70% |
| Kieran Bingham | 1 | 0.01% | 1 | 2.70% |
| Tom Rix | 1 | 0.01% | 1 | 2.70% |
| Linus Walleij | 1 | 0.01% | 1 | 2.70% |
| Lucas De Marchi | 1 | 0.01% | 1 | 2.70% |
| Total | 6973 | 37 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * drivers/media/radio/si4713-i2c.c * * Silicon Labs Si4713 FM Radio Transmitter I2C commands. * * Copyright (c) 2009 Nokia Corporation * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> */ #include <linux/completion.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-common.h> #include "si4713.h" /* module parameters */ static int debug; module_param(debug, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(debug, "Debug level (0 - 2)"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); MODULE_VERSION("0.0.1"); #define DEFAULT_RDS_PI 0x00 #define DEFAULT_RDS_PTY 0x00 #define DEFAULT_RDS_DEVIATION 0x00C8 #define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003 #define DEFAULT_LIMITER_RTIME 0x1392 #define DEFAULT_LIMITER_DEV 0x102CA #define DEFAULT_PILOT_FREQUENCY 0x4A38 #define DEFAULT_PILOT_DEVIATION 0x1A5E #define DEFAULT_ACOMP_ATIME 0x0000 #define DEFAULT_ACOMP_RTIME 0xF4240L #define DEFAULT_ACOMP_GAIN 0x0F #define DEFAULT_ACOMP_THRESHOLD (-0x28) #define DEFAULT_MUTE 0x01 #define DEFAULT_POWER_LEVEL 88 #define DEFAULT_FREQUENCY 8800 #define DEFAULT_PREEMPHASIS FMPE_EU #define DEFAULT_TUNE_RNL 0xFF #define to_si4713_device(sd) container_of(sd, struct si4713_device, sd) /* frequency domain transformation (using times 10 to avoid floats) */ #define FREQDEV_UNIT 100000 #define FREQV4L2_MULTI 625 #define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI) #define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT) #define FREQ_RANGE_LOW 7600 #define FREQ_RANGE_HIGH 10800 #define MAX_ARGS 7 #define RDS_BLOCK 8 #define RDS_BLOCK_CLEAR 0x03 #define RDS_BLOCK_LOAD 0x04 #define RDS_RADIOTEXT_2A 0x20 #define RDS_RADIOTEXT_BLK_SIZE 4 #define RDS_RADIOTEXT_INDEX_MAX 0x0F #define RDS_CARRIAGE_RETURN 0x0D #define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0)) #define get_status_bit(p, b, m) (((p) & (m)) >> (b)) #define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b))) #define ATTACK_TIME_UNIT 500 #define POWER_OFF 0x00 #define POWER_ON 0x01 #define msb(x) ((u8)((u16) x >> 8)) #define lsb(x) ((u8)((u16) x & 0x00FF)) #define compose_u16(msb, lsb) (((u16)msb << 8) | lsb) #define check_command_failed(status) (!(status & SI4713_CTS) || \ (status & SI4713_ERR)) /* mute definition */ #define set_mute(p) (((p) & 1) | (((p) & 1) << 1)) #ifdef DEBUG #define DBG_BUFFER(device, message, buffer, size) \ { \ int i; \ char str[(size)*5]; \ for (i = 0; i < size; i++) \ sprintf(str + i * 5, " 0x%02x", buffer[i]); \ v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \ } #else #define DBG_BUFFER(device, message, buffer, size) #endif /* * Values for limiter release time (sorted by second column) * device release * value time (us) */ static long limiter_times[] = { 2000, 250, 1000, 500, 510, 1000, 255, 2000, 170, 3000, 127, 4020, 102, 5010, 85, 6020, 73, 7010, 64, 7990, 57, 8970, 51, 10030, 25, 20470, 17, 30110, 13, 39380, 10, 51190, 8, 63690, 7, 73140, 6, 85330, 5, 102390, }; /* * Values for audio compression release time (sorted by second column) * device release * value time (us) */ static unsigned long acomp_rtimes[] = { 0, 100000, 1, 200000, 2, 350000, 3, 525000, 4, 1000000, }; /* * Values for preemphasis (sorted by second column) * device preemphasis * value value (v4l2) */ static unsigned long preemphasis_values[] = { FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED, FMPE_EU, V4L2_PREEMPHASIS_50_uS, FMPE_USA, V4L2_PREEMPHASIS_75_uS, }; static int usecs_to_dev(unsigned long usecs, unsigned long const array[], int size) { int i; int rval = -EINVAL; for (i = 0; i < size / 2; i++) if (array[(i * 2) + 1] >= usecs) { rval = array[i * 2]; break; } return rval; } /* si4713_handler: IRQ handler, just complete work */ static irqreturn_t si4713_handler(int irq, void *dev) { struct si4713_device *sdev = dev; v4l2_dbg(2, debug, &sdev->sd, "%s: sending signal to completion work.\n", __func__); complete(&sdev->work); return IRQ_HANDLED; } /* * si4713_send_command - sends a command to si4713 and waits its response * @sdev: si4713_device structure for the device we are communicating * @command: command id * @args: command arguments we are sending (up to 7) * @argn: actual size of @args * @response: buffer to place the expected response from the device (up to 15) * @respn: actual size of @response * @usecs: amount of time to wait before reading the response (in usecs) */ static int si4713_send_command(struct si4713_device *sdev, const u8 command, const u8 args[], const int argn, u8 response[], const int respn, const int usecs) { struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); unsigned long until_jiffies; u8 data1[MAX_ARGS + 1]; int err; if (!client->adapter) return -ENODEV; /* First send the command and its arguments */ data1[0] = command; memcpy(data1 + 1, args, argn); DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1); err = i2c_master_send(client, data1, argn + 1); if (err != argn + 1) { v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n", command); return err < 0 ? err : -EIO; } until_jiffies = jiffies + usecs_to_jiffies(usecs) + 1; /* Wait response from interrupt */ if (client->irq) { if (!wait_for_completion_timeout(&sdev->work, usecs_to_jiffies(usecs) + 1)) v4l2_warn(&sdev->sd, "(%s) Device took too much time to answer.\n", __func__); } do { err = i2c_master_recv(client, response, respn); if (err != respn) { v4l2_err(&sdev->sd, "Error %d while reading response for command 0x%02x\n", err, command); return err < 0 ? err : -EIO; } DBG_BUFFER(&sdev->sd, "Response", response, respn); if (!check_command_failed(response[0])) return 0; if (client->irq) return -EBUSY; if (usecs <= 1000) usleep_range(usecs, 1000); else usleep_range(1000, 2000); } while (time_is_after_jiffies(until_jiffies)); return -EBUSY; } /* * si4713_read_property - reads a si4713 property * @sdev: si4713_device structure for the device we are communicating * @prop: property identification number * @pv: property value to be returned on success */ static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv) { int err; u8 val[SI4713_GET_PROP_NRESP]; /* * .First byte = 0 * .Second byte = property's MSB * .Third byte = property's LSB */ const u8 args[SI4713_GET_PROP_NARGS] = { 0x00, msb(prop), lsb(prop), }; err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (err < 0) return err; *pv = compose_u16(val[2], val[3]); v4l2_dbg(1, debug, &sdev->sd, "%s: property=0x%02x value=0x%02x status=0x%02x\n", __func__, prop, *pv, val[0]); return err; } /* * si4713_write_property - modifies a si4713 property * @sdev: si4713_device structure for the device we are communicating * @prop: property identification number * @val: new value for that property */ static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val) { int rval; u8 resp[SI4713_SET_PROP_NRESP]; /* * .First byte = 0 * .Second byte = property's MSB * .Third byte = property's LSB * .Fourth byte = value's MSB * .Fifth byte = value's LSB */ const u8 args[SI4713_SET_PROP_NARGS] = { 0x00, msb(prop), lsb(prop), msb(val), lsb(val), }; rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY, args, ARRAY_SIZE(args), resp, ARRAY_SIZE(resp), DEFAULT_TIMEOUT); if (rval < 0) return rval; v4l2_dbg(1, debug, &sdev->sd, "%s: property=0x%02x value=0x%02x status=0x%02x\n", __func__, prop, val, resp[0]); /* * As there is no command response for SET_PROPERTY, * wait Tcomp time to finish before proceed, in order * to have property properly set. */ msleep(TIMEOUT_SET_PROPERTY); return rval; } /* * si4713_powerup - Powers the device up * @sdev: si4713_device structure for the device we are communicating */ static int si4713_powerup(struct si4713_device *sdev) { struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); int err; u8 resp[SI4713_PWUP_NRESP]; /* * .First byte = Enabled interrupts and boot function * .Second byte = Input operation mode */ u8 args[SI4713_PWUP_NARGS] = { SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX, SI4713_PWUP_OPMOD_ANALOG, }; if (sdev->power_state) return 0; if (sdev->vdd) { err = regulator_enable(sdev->vdd); if (err) { v4l2_err(&sdev->sd, "Failed to enable vdd: %d\n", err); return err; } } if (sdev->vio) { err = regulator_enable(sdev->vio); if (err) { v4l2_err(&sdev->sd, "Failed to enable vio: %d\n", err); return err; } } if (sdev->gpio_reset) { udelay(50); gpiod_set_value(sdev->gpio_reset, 1); } if (client->irq) args[0] |= SI4713_PWUP_CTSIEN; err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, args, ARRAY_SIZE(args), resp, ARRAY_SIZE(resp), TIMEOUT_POWER_UP); if (!err) { v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n", resp[0]); v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n"); sdev->power_state = POWER_ON; if (client->irq) err = si4713_write_property(sdev, SI4713_GPO_IEN, SI4713_STC_INT | SI4713_CTS); return err; } gpiod_set_value(sdev->gpio_reset, 0); if (sdev->vdd) { err = regulator_disable(sdev->vdd); if (err) v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n", err); } if (sdev->vio) { err = regulator_disable(sdev->vio); if (err) v4l2_err(&sdev->sd, "Failed to disable vio: %d\n", err); } return err; } /* * si4713_powerdown - Powers the device down * @sdev: si4713_device structure for the device we are communicating */ static int si4713_powerdown(struct si4713_device *sdev) { int err; u8 resp[SI4713_PWDN_NRESP]; if (!sdev->power_state) return 0; err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN, NULL, 0, resp, ARRAY_SIZE(resp), DEFAULT_TIMEOUT); if (!err) { v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", resp[0]); v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); if (sdev->gpio_reset) gpiod_set_value(sdev->gpio_reset, 0); if (sdev->vdd) { err = regulator_disable(sdev->vdd); if (err) { v4l2_err(&sdev->sd, "Failed to disable vdd: %d\n", err); } } if (sdev->vio) { err = regulator_disable(sdev->vio); if (err) { v4l2_err(&sdev->sd, "Failed to disable vio: %d\n", err); } } sdev->power_state = POWER_OFF; } return err; } /* * si4713_checkrev - Checks if we are treating a device with the correct rev. * @sdev: si4713_device structure for the device we are communicating */ static int si4713_checkrev(struct si4713_device *sdev) { struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); int rval; u8 resp[SI4713_GETREV_NRESP]; rval = si4713_send_command(sdev, SI4713_CMD_GET_REV, NULL, 0, resp, ARRAY_SIZE(resp), DEFAULT_TIMEOUT); if (rval < 0) return rval; if (resp[1] == SI4713_PRODUCT_NUMBER) { v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n", client->addr << 1, client->adapter->name); } else { v4l2_err(&sdev->sd, "Invalid product number 0x%X\n", resp[1]); rval = -EINVAL; } return rval; } /* * si4713_wait_stc - Waits STC interrupt and clears status bits. Useful * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS * @sdev: si4713_device structure for the device we are communicating * @usecs: timeout to wait for STC interrupt signal */ static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) { struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); u8 resp[SI4713_GET_STATUS_NRESP]; unsigned long start_jiffies = jiffies; int err; if (client->irq && !wait_for_completion_timeout(&sdev->work, usecs_to_jiffies(usecs) + 1)) v4l2_warn(&sdev->sd, "(%s) Device took too much time to answer.\n", __func__); for (;;) { /* Clear status bits */ err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, NULL, 0, resp, ARRAY_SIZE(resp), DEFAULT_TIMEOUT); /* The USB device returns errors when it waits for the * STC bit to be set. Hence polling */ if (err >= 0) { v4l2_dbg(1, debug, &sdev->sd, "%s: status bits: 0x%02x\n", __func__, resp[0]); if (resp[0] & SI4713_STC_INT) return 0; } if (jiffies_to_usecs(jiffies - start_jiffies) > usecs) return err < 0 ? err : -EIO; /* We sleep here for 3-4 ms in order to avoid flooding the device * with USB requests. The si4713 USB driver was developed * by reverse engineering the Windows USB driver. The windows * driver also has a ~2.5 ms delay between responses. */ usleep_range(3000, 4000); } } /* * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning * frequency between 76 and 108 MHz in 10 kHz units and * steps of 50 kHz. * @sdev: si4713_device structure for the device we are communicating * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) */ static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) { int err; u8 val[SI4713_TXFREQ_NRESP]; /* * .First byte = 0 * .Second byte = frequency's MSB * .Third byte = frequency's LSB */ const u8 args[SI4713_TXFREQ_NARGS] = { 0x00, msb(frequency), lsb(frequency), }; err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (err < 0) return err; v4l2_dbg(1, debug, &sdev->sd, "%s: frequency=0x%02x status=0x%02x\n", __func__, frequency, val[0]); err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); if (err < 0) return err; return compose_u16(args[1], args[2]); } /* * si4713_tx_tune_power - Sets the RF voltage level between 88 and 120 dBuV in * 1 dB units. A value of 0x00 indicates off. The command * also sets the antenna tuning capacitance. A value of 0 * indicates autotuning, and a value of 1 - 191 indicates * a manual override, which results in a tuning * capacitance of 0.25 pF x @antcap. * @sdev: si4713_device structure for the device we are communicating * @power: tuning power (88 - 120 dBuV, unit/step 1 dB) * @antcap: value of antenna tuning capacitor (0 - 191) */ static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power, u8 antcap) { int err; u8 val[SI4713_TXPWR_NRESP]; /* * .First byte = 0 * .Second byte = 0 * .Third byte = power * .Fourth byte = antcap */ u8 args[SI4713_TXPWR_NARGS] = { 0x00, 0x00, power, antcap, }; /* Map power values 1-87 to MIN_POWER (88) */ if (power > 0 && power < SI4713_MIN_POWER) args[2] = power = SI4713_MIN_POWER; err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (err < 0) return err; v4l2_dbg(1, debug, &sdev->sd, "%s: power=0x%02x antcap=0x%02x status=0x%02x\n", __func__, power, antcap, val[0]); return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER); } /* * si4713_tx_tune_measure - Enters receive mode and measures the received noise * level in units of dBuV on the selected frequency. * The Frequency must be between 76 and 108 MHz in 10 kHz * units and steps of 50 kHz. The command also sets the * antenna tuning capacitance. A value of 0 means * autotuning, and a value of 1 to 191 indicates manual * override. * @sdev: si4713_device structure for the device we are communicating * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) * @antcap: value of antenna tuning capacitor (0 - 191) */ static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency, u8 antcap) { int err; u8 val[SI4713_TXMEA_NRESP]; /* * .First byte = 0 * .Second byte = frequency's MSB * .Third byte = frequency's LSB * .Fourth byte = antcap */ const u8 args[SI4713_TXMEA_NARGS] = { 0x00, msb(frequency), lsb(frequency), antcap, }; sdev->tune_rnl = DEFAULT_TUNE_RNL; if (antcap > SI4713_MAX_ANTCAP) return -EDOM; err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (err < 0) return err; v4l2_dbg(1, debug, &sdev->sd, "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n", __func__, frequency, antcap, val[0]); return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); } /* * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or * tx_tune_power commands. This command return the current * frequency, output voltage in dBuV, the antenna tunning * capacitance value and the received noise level. The * command also clears the stcint interrupt bit when the * first bit of its arguments is high. * @sdev: si4713_device structure for the device we are communicating * @intack: 0x01 to clear the seek/tune complete interrupt status indicator. * @frequency: returned frequency * @power: returned power * @antcap: returned antenna capacitance * @noise: returned noise level */ static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack, u16 *frequency, u8 *power, u8 *antcap, u8 *noise) { int err; u8 val[SI4713_TXSTATUS_NRESP]; /* * .First byte = intack bit */ const u8 args[SI4713_TXSTATUS_NARGS] = { intack & SI4713_INTACK_MASK, }; err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (!err) { v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); *frequency = compose_u16(val[2], val[3]); sdev->frequency = *frequency; *power = val[5]; *antcap = val[6]; *noise = val[7]; v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz (power %d, antcap %d, rnl %d)\n", __func__, *frequency, *power, *antcap, *noise); } return err; } /* * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer. * @sdev: si4713_device structure for the device we are communicating * @mode: the buffer operation mode. * @rdsb: RDS Block B * @rdsc: RDS Block C * @rdsd: RDS Block D * @cbleft: returns the number of available circular buffer blocks minus the * number of used circular buffer blocks. */ static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb, u16 rdsc, u16 rdsd, s8 *cbleft) { int err; u8 val[SI4713_RDSBUFF_NRESP]; const u8 args[SI4713_RDSBUFF_NARGS] = { mode & SI4713_RDSBUFF_MODE_MASK, msb(rdsb), lsb(rdsb), msb(rdsc), lsb(rdsc), msb(rdsd), lsb(rdsd), }; err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (!err) { v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); *cbleft = (s8)val[2] - val[3]; v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts 0x%02x cb avail: %d cb used %d fifo avail %d fifo used %d\n", __func__, val[1], val[2], val[3], val[4], val[5]); } return err; } /* * si4713_tx_rds_ps - Loads the program service buffer. * @sdev: si4713_device structure for the device we are communicating * @psid: program service id to be loaded. * @pschar: assumed 4 size char array to be loaded into the program service */ static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid, unsigned char *pschar) { int err; u8 val[SI4713_RDSPS_NRESP]; const u8 args[SI4713_RDSPS_NARGS] = { psid & SI4713_RDSPS_PSID_MASK, pschar[0], pschar[1], pschar[2], pschar[3], }; err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS, args, ARRAY_SIZE(args), val, ARRAY_SIZE(val), DEFAULT_TIMEOUT); if (err < 0) return err; v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); return err; } static int si4713_set_power_state(struct si4713_device *sdev, u8 value) { if (value) return si4713_powerup(sdev); return si4713_powerdown(sdev); } static int si4713_set_mute(struct si4713_device *sdev, u16 mute) { int rval = 0; mute = set_mute(mute); if (sdev->power_state) rval = si4713_write_property(sdev, SI4713_TX_LINE_INPUT_MUTE, mute); return rval; } static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name) { int rval = 0, i; u8 len = 0; /* We want to clear the whole thing */ if (!strlen(ps_name)) memset(ps_name, 0, MAX_RDS_PS_NAME + 1); if (sdev->power_state) { /* Write the new ps name and clear the padding */ for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) { rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)), ps_name + i); if (rval < 0) return rval; } /* Setup the size to be sent */ if (strlen(ps_name)) len = strlen(ps_name) - 1; else len = 1; rval = si4713_write_property(sdev, SI4713_TX_RDS_PS_MESSAGE_COUNT, rds_ps_nblocks(len)); if (rval < 0) return rval; rval = si4713_write_property(sdev, SI4713_TX_RDS_PS_REPEAT_COUNT, DEFAULT_RDS_PS_REPEAT_COUNT * 2); if (rval < 0) return rval; } return rval; } static int si4713_set_rds_radio_text(struct si4713_device *sdev, const char *rt) { static const char cr[RDS_RADIOTEXT_BLK_SIZE] = { RDS_CARRIAGE_RETURN, 0 }; int rval = 0, i; u16 t_index = 0; u8 b_index = 0, cr_inserted = 0; s8 left; if (!sdev->power_state) return rval; rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left); if (rval < 0) return rval; if (!strlen(rt)) return rval; do { /* RDS spec says that if the last block isn't used, * then apply a carriage return */ if (t_index < (RDS_RADIOTEXT_INDEX_MAX * RDS_RADIOTEXT_BLK_SIZE)) { for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) { if (!rt[t_index + i] || rt[t_index + i] == RDS_CARRIAGE_RETURN) { rt = cr; cr_inserted = 1; break; } } } rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD, compose_u16(RDS_RADIOTEXT_2A, b_index++), compose_u16(rt[t_index], rt[t_index + 1]), compose_u16(rt[t_index + 2], rt[t_index + 3]), &left); if (rval < 0) return rval; t_index += RDS_RADIOTEXT_BLK_SIZE; if (cr_inserted) break; } while (left > 0); return rval; } /* * si4713_update_tune_status - update properties from tx_tune_status * command. Must be called with sdev->mutex held. * @sdev: si4713_device structure for the device we are communicating */ static int si4713_update_tune_status(struct si4713_device *sdev) { int rval; u16 f = 0; u8 p = 0, a = 0, n = 0; rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); if (rval < 0) goto exit; /* TODO: check that power_level and antenna_capacitor really are not changed by the hardware. If they are, then these controls should become volatiles. sdev->power_level = p; sdev->antenna_capacitor = a;*/ sdev->tune_rnl = n; exit: return rval; } static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id, s32 *bit, s32 *mask, u16 *property, int *mul, unsigned long **table, int *size) { s32 rval = 0; switch (id) { /* FM_TX class controls */ case V4L2_CID_RDS_TX_PI: *property = SI4713_TX_RDS_PI; *mul = 1; break; case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: *property = SI4713_TX_ACOMP_THRESHOLD; *mul = 1; break; case V4L2_CID_AUDIO_COMPRESSION_GAIN: *property = SI4713_TX_ACOMP_GAIN; *mul = 1; break; case V4L2_CID_PILOT_TONE_FREQUENCY: *property = SI4713_TX_PILOT_FREQUENCY; *mul = 1; break; case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: *property = SI4713_TX_ACOMP_ATTACK_TIME; *mul = ATTACK_TIME_UNIT; break; case V4L2_CID_PILOT_TONE_DEVIATION: *property = SI4713_TX_PILOT_DEVIATION; *mul = 10; break; case V4L2_CID_AUDIO_LIMITER_DEVIATION: *property = SI4713_TX_AUDIO_DEVIATION; *mul = 10; break; case V4L2_CID_RDS_TX_DEVIATION: *property = SI4713_TX_RDS_DEVIATION; *mul = 1; break; case V4L2_CID_RDS_TX_PTY: *property = SI4713_TX_RDS_PS_MISC; *bit = 5; *mask = 0x1F << 5; break; case V4L2_CID_RDS_TX_DYNAMIC_PTY: *property = SI4713_TX_RDS_PS_MISC; *bit = 15; *mask = 1 << 15; break; case V4L2_CID_RDS_TX_COMPRESSED: *property = SI4713_TX_RDS_PS_MISC; *bit = 14; *mask = 1 << 14; break; case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: *property = SI4713_TX_RDS_PS_MISC; *bit = 13; *mask = 1 << 13; break; case V4L2_CID_RDS_TX_MONO_STEREO: *property = SI4713_TX_RDS_PS_MISC; *bit = 12; *mask = 1 << 12; break; case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: *property = SI4713_TX_RDS_PS_MISC; *bit = 10; *mask = 1 << 10; break; case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: *property = SI4713_TX_RDS_PS_MISC; *bit = 4; *mask = 1 << 4; break; case V4L2_CID_RDS_TX_MUSIC_SPEECH: *property = SI4713_TX_RDS_PS_MISC; *bit = 3; *mask = 1 << 3; break; case V4L2_CID_AUDIO_LIMITER_ENABLED: *property = SI4713_TX_ACOMP_ENABLE; *bit = 1; *mask = 1 << 1; break; case V4L2_CID_AUDIO_COMPRESSION_ENABLED: *property = SI4713_TX_ACOMP_ENABLE; *bit = 0; *mask = 1 << 0; break; case V4L2_CID_PILOT_TONE_ENABLED: *property = SI4713_TX_COMPONENT_ENABLE; *bit = 0; *mask = 1 << 0; break; case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: *property = SI4713_TX_LIMITER_RELEASE_TIME; *table = limiter_times; *size = ARRAY_SIZE(limiter_times); break; case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: *property = SI4713_TX_ACOMP_RELEASE_TIME; *table = acomp_rtimes; *size = ARRAY_SIZE(acomp_rtimes); break; case V4L2_CID_TUNE_PREEMPHASIS: *property = SI4713_TX_PREEMPHASIS; *table = preemphasis_values; *size = ARRAY_SIZE(preemphasis_values); break; default: rval = -EINVAL; break; } return rval; } static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f); static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *); /* * si4713_setup - Sets the device up with current configuration. * @sdev: si4713_device structure for the device we are communicating */ static int si4713_setup(struct si4713_device *sdev) { struct v4l2_frequency f; struct v4l2_modulator vm; int rval; /* Device procedure needs to set frequency first */ f.tuner = 0; f.frequency = sdev->frequency ? sdev->frequency : DEFAULT_FREQUENCY; f.frequency = si4713_to_v4l2(f.frequency); rval = si4713_s_frequency(&sdev->sd, &f); vm.index = 0; if (sdev->stereo) vm.txsubchans = V4L2_TUNER_SUB_STEREO; else vm.txsubchans = V4L2_TUNER_SUB_MONO; if (sdev->rds_enabled) vm.txsubchans |= V4L2_TUNER_SUB_RDS; si4713_s_modulator(&sdev->sd, &vm); return rval; } /* * si4713_initialize - Sets the device up with default configuration. * @sdev: si4713_device structure for the device we are communicating */ static int si4713_initialize(struct si4713_device *sdev) { int rval; rval = si4713_set_power_state(sdev, POWER_ON); if (rval < 0) return rval; rval = si4713_checkrev(sdev); if (rval < 0) return rval; rval = si4713_set_power_state(sdev, POWER_OFF); if (rval < 0) return rval; sdev->frequency = DEFAULT_FREQUENCY; sdev->stereo = 1; sdev->tune_rnl = DEFAULT_TUNE_RNL; return 0; } /* si4713_s_ctrl - set the value of a control */ static int si4713_s_ctrl(struct v4l2_ctrl *ctrl) { struct si4713_device *sdev = container_of(ctrl->handler, struct si4713_device, ctrl_handler); u32 val = 0; s32 bit = 0, mask = 0; u16 property = 0; int mul = 0; unsigned long *table = NULL; int size = 0; bool force = false; int c; int ret = 0; if (ctrl->id != V4L2_CID_AUDIO_MUTE) return -EINVAL; if (ctrl->is_new) { if (ctrl->val) { ret = si4713_set_mute(sdev, ctrl->val); if (!ret) ret = si4713_set_power_state(sdev, POWER_DOWN); return ret; } ret = si4713_set_power_state(sdev, POWER_UP); if (!ret) ret = si4713_set_mute(sdev, ctrl->val); if (!ret) ret = si4713_setup(sdev); if (ret) return ret; force = true; } if (!sdev->power_state) return 0; for (c = 1; !ret && c < ctrl->ncontrols; c++) { ctrl = ctrl->cluster[c]; if (!force && !ctrl->is_new) continue; switch (ctrl->id) { case V4L2_CID_RDS_TX_PS_NAME: ret = si4713_set_rds_ps_name(sdev, ctrl->p_new.p_char); break; case V4L2_CID_RDS_TX_RADIO_TEXT: ret = si4713_set_rds_radio_text(sdev, ctrl->p_new.p_char); break; case V4L2_CID_TUNE_ANTENNA_CAPACITOR: /* don't handle this control if we force setting all * controls since in that case it will be handled by * V4L2_CID_TUNE_POWER_LEVEL. */ if (force) break; fallthrough; case V4L2_CID_TUNE_POWER_LEVEL: ret = si4713_tx_tune_power(sdev, sdev->tune_pwr_level->val, sdev->tune_ant_cap->val); if (!ret) { /* Make sure we don't set this twice */ sdev->tune_ant_cap->is_new = false; sdev->tune_pwr_level->is_new = false; } break; case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: case V4L2_CID_RDS_TX_ALT_FREQS: if (sdev->rds_alt_freqs_enable->val) { val = sdev->rds_alt_freqs->p_new.p_u32[0]; val = val / 100 - 876 + 0xe101; } else { val = 0xe0e0; } ret = si4713_write_property(sdev, SI4713_TX_RDS_PS_AF, val); break; default: ret = si4713_choose_econtrol_action(sdev, ctrl->id, &bit, &mask, &property, &mul, &table, &size); if (ret < 0) break; val = ctrl->val; if (mul) { val = val / mul; } else if (table) { ret = usecs_to_dev(val, table, size); if (ret < 0) break; val = ret; ret = 0; } if (mask) { ret = si4713_read_property(sdev, property, &val); if (ret < 0) break; val = set_bits(val, ctrl->val, bit, mask); } ret = si4713_write_property(sdev, property, val); if (ret < 0) break; if (mask) val = ctrl->val; break; } } return ret; } /* si4713_ioctl - deal with private ioctls (only rnl for now) */ static long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) { struct si4713_device *sdev = to_si4713_device(sd); struct si4713_rnl *rnl = arg; u16 frequency; int rval = 0; if (!arg) return -EINVAL; switch (cmd) { case SI4713_IOC_MEASURE_RNL: frequency = v4l2_to_si4713(rnl->frequency); if (sdev->power_state) { /* Set desired measurement frequency */ rval = si4713_tx_tune_measure(sdev, frequency, 0); if (rval < 0) return rval; /* get results from tune status */ rval = si4713_update_tune_status(sdev); if (rval < 0) return rval; } rnl->rnl = sdev->tune_rnl; break; default: /* nothing */ rval = -ENOIOCTLCMD; } return rval; } /* si4713_g_modulator - get modulator attributes */ static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) { struct si4713_device *sdev = to_si4713_device(sd); int rval = 0; if (!sdev) return -ENODEV; if (vm->index > 0) return -EINVAL; strscpy(vm->name, "FM Modulator", sizeof(vm->name)); vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_RDS | V4L2_TUNER_CAP_RDS_CONTROLS; /* Report current frequency range limits */ vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW); vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH); if (sdev->power_state) { u32 comp_en = 0; rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, &comp_en); if (rval < 0) return rval; sdev->stereo = get_status_bit(comp_en, 1, 1 << 1); } /* Report current audio mode: mono or stereo */ if (sdev->stereo) vm->txsubchans = V4L2_TUNER_SUB_STEREO; else vm->txsubchans = V4L2_TUNER_SUB_MONO; /* Report rds feature status */ if (sdev->rds_enabled) vm->txsubchans |= V4L2_TUNER_SUB_RDS; else vm->txsubchans &= ~V4L2_TUNER_SUB_RDS; return rval; } /* si4713_s_modulator - set modulator attributes */ static int si4713_s_modulator(struct v4l2_subdev *sd, const struct v4l2_modulator *vm) { struct si4713_device *sdev = to_si4713_device(sd); int rval = 0; u16 stereo, rds; u32 p; if (!sdev) return -ENODEV; if (vm->index > 0) return -EINVAL; /* Set audio mode: mono or stereo */ if (vm->txsubchans & V4L2_TUNER_SUB_STEREO) stereo = 1; else if (vm->txsubchans & V4L2_TUNER_SUB_MONO) stereo = 0; else return -EINVAL; rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS); if (sdev->power_state) { rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, &p); if (rval < 0) return rval; p = set_bits(p, stereo, 1, 1 << 1); p = set_bits(p, rds, 2, 1 << 2); rval = si4713_write_property(sdev, SI4713_TX_COMPONENT_ENABLE, p); if (rval < 0) return rval; } sdev->stereo = stereo; sdev->rds_enabled = rds; return rval; } /* si4713_g_frequency - get tuner or modulator radio frequency */ static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) { struct si4713_device *sdev = to_si4713_device(sd); int rval = 0; if (f->tuner) return -EINVAL; if (sdev->power_state) { u16 freq; u8 p, a, n; rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n); if (rval < 0) return rval; sdev->frequency = freq; } f->frequency = si4713_to_v4l2(sdev->frequency); return rval; } /* si4713_s_frequency - set tuner or modulator radio frequency */ static int si4713_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *f) { struct si4713_device *sdev = to_si4713_device(sd); int rval = 0; u16 frequency = v4l2_to_si4713(f->frequency); if (f->tuner) return -EINVAL; /* Check frequency range */ frequency = clamp_t(u16, frequency, FREQ_RANGE_LOW, FREQ_RANGE_HIGH); if (sdev->power_state) { rval = si4713_tx_tune_freq(sdev, frequency); if (rval < 0) return rval; frequency = rval; rval = 0; } sdev->frequency = frequency; return rval; } static const struct v4l2_ctrl_ops si4713_ctrl_ops = { .s_ctrl = si4713_s_ctrl, }; static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = { .ioctl = si4713_ioctl, }; static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = { .g_frequency = si4713_g_frequency, .s_frequency = si4713_s_frequency, .g_modulator = si4713_g_modulator, .s_modulator = si4713_s_modulator, }; static const struct v4l2_subdev_ops si4713_subdev_ops = { .core = &si4713_subdev_core_ops, .tuner = &si4713_subdev_tuner_ops, }; static const struct v4l2_ctrl_config si4713_alt_freqs_ctrl = { .id = V4L2_CID_RDS_TX_ALT_FREQS, .type = V4L2_CTRL_TYPE_U32, .min = 87600, .max = 107900, .step = 100, .def = 87600, .dims = { 1 }, .elem_size = sizeof(u32), }; /* * I2C driver interface */ /* si4713_probe - probe for the device */ static int si4713_probe(struct i2c_client *client) { struct si4713_device *sdev; struct v4l2_ctrl_handler *hdl; struct si4713_platform_data *pdata = client->dev.platform_data; struct device_node *np = client->dev.of_node; struct radio_si4713_platform_data si4713_pdev_pdata; struct platform_device *si4713_pdev; int rval; sdev = devm_kzalloc(&client->dev, sizeof(*sdev), GFP_KERNEL); if (!sdev) { dev_err(&client->dev, "Failed to alloc video device.\n"); rval = -ENOMEM; goto exit; } sdev->gpio_reset = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(sdev->gpio_reset)) { rval = PTR_ERR(sdev->gpio_reset); dev_err(&client->dev, "Failed to request gpio: %d\n", rval); goto exit; } sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd"); if (IS_ERR(sdev->vdd)) { rval = PTR_ERR(sdev->vdd); if (rval == -EPROBE_DEFER) goto exit; dev_dbg(&client->dev, "no vdd regulator found: %d\n", rval); sdev->vdd = NULL; } sdev->vio = devm_regulator_get_optional(&client->dev, "vio"); if (IS_ERR(sdev->vio)) { rval = PTR_ERR(sdev->vio); if (rval == -EPROBE_DEFER) goto exit; dev_dbg(&client->dev, "no vio regulator found: %d\n", rval); sdev->vio = NULL; } v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops); init_completion(&sdev->work); hdl = &sdev->ctrl_handler; v4l2_ctrl_handler_init(hdl, 20); sdev->mute = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, DEFAULT_MUTE); sdev->rds_pi = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_PI, 0, 0xffff, 1, DEFAULT_RDS_PI); sdev->rds_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_PTY, 0, 31, 1, DEFAULT_RDS_PTY); sdev->rds_compressed = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_COMPRESSED, 0, 1, 1, 0); sdev->rds_art_head = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_ARTIFICIAL_HEAD, 0, 1, 1, 0); sdev->rds_stereo = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_MONO_STEREO, 0, 1, 1, 1); sdev->rds_tp = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_TRAFFIC_PROGRAM, 0, 1, 1, 0); sdev->rds_ta = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT, 0, 1, 1, 0); sdev->rds_ms = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_MUSIC_SPEECH, 0, 1, 1, 1); sdev->rds_dyn_pty = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_DYNAMIC_PTY, 0, 1, 1, 0); sdev->rds_alt_freqs_enable = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_ALT_FREQS_ENABLE, 0, 1, 1, 0); sdev->rds_alt_freqs = v4l2_ctrl_new_custom(hdl, &si4713_alt_freqs_ctrl, NULL); sdev->rds_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_DEVIATION, 0, MAX_RDS_DEVIATION, 10, DEFAULT_RDS_DEVIATION); /* * Report step as 8. From RDS spec, psname * should be 8. But there are receivers which scroll strings * sized as 8xN. */ sdev->rds_ps_name = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_PS_NAME, 0, MAX_RDS_PS_NAME, 8, 0); /* * Report step as 32 (2A block). From RDS spec, * radio text should be 32 for 2A block. But there are receivers * which scroll strings sized as 32xN. Setting default to 32. */ sdev->rds_radio_text = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_RDS_TX_RADIO_TEXT, 0, MAX_RDS_RADIO_TEXT, 32, 0); sdev->limiter_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_LIMITER_ENABLED, 0, 1, 1, 1); sdev->limiter_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, 250, MAX_LIMITER_RELEASE_TIME, 10, DEFAULT_LIMITER_RTIME); sdev->limiter_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_LIMITER_DEVIATION, 0, MAX_LIMITER_DEVIATION, 10, DEFAULT_LIMITER_DEV); sdev->compression_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_ENABLED, 0, 1, 1, 1); sdev->compression_gain = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_GAIN, 0, MAX_ACOMP_GAIN, 1, DEFAULT_ACOMP_GAIN); sdev->compression_threshold = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_THRESHOLD, MIN_ACOMP_THRESHOLD, MAX_ACOMP_THRESHOLD, 1, DEFAULT_ACOMP_THRESHOLD); sdev->compression_attack_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, 0, MAX_ACOMP_ATTACK_TIME, 500, DEFAULT_ACOMP_ATIME); sdev->compression_release_time = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, 100000, MAX_ACOMP_RELEASE_TIME, 100000, DEFAULT_ACOMP_RTIME); sdev->pilot_tone_enabled = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_PILOT_TONE_ENABLED, 0, 1, 1, 1); sdev->pilot_tone_deviation = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_PILOT_TONE_DEVIATION, 0, MAX_PILOT_DEVIATION, 10, DEFAULT_PILOT_DEVIATION); sdev->pilot_tone_freq = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_PILOT_TONE_FREQUENCY, 0, MAX_PILOT_FREQUENCY, 1, DEFAULT_PILOT_FREQUENCY); sdev->tune_preemphasis = v4l2_ctrl_new_std_menu(hdl, &si4713_ctrl_ops, V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS, 0, V4L2_PREEMPHASIS_50_uS); sdev->tune_pwr_level = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_TUNE_POWER_LEVEL, 0, SI4713_MAX_POWER, 1, DEFAULT_POWER_LEVEL); sdev->tune_ant_cap = v4l2_ctrl_new_std(hdl, &si4713_ctrl_ops, V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0, SI4713_MAX_ANTCAP, 1, 0); if (hdl->error) { rval = hdl->error; goto free_ctrls; } v4l2_ctrl_cluster(29, &sdev->mute); sdev->sd.ctrl_handler = hdl; if (client->irq) { rval = devm_request_irq(&client->dev, client->irq, si4713_handler, IRQF_TRIGGER_FALLING, client->name, sdev); if (rval < 0) { v4l2_err(&sdev->sd, "Could not request IRQ\n"); goto free_ctrls; } v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n"); } else { v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n"); } rval = si4713_initialize(sdev); if (rval < 0) { v4l2_err(&sdev->sd, "Failed to probe device information.\n"); goto free_ctrls; } if (!np && (!pdata || !pdata->is_platform_device)) return 0; si4713_pdev = platform_device_alloc("radio-si4713", -1); if (!si4713_pdev) { rval = -ENOMEM; goto put_main_pdev; } si4713_pdev_pdata.subdev = client; rval = platform_device_add_data(si4713_pdev, &si4713_pdev_pdata, sizeof(si4713_pdev_pdata)); if (rval) goto put_main_pdev; rval = platform_device_add(si4713_pdev); if (rval) goto put_main_pdev; sdev->pd = si4713_pdev; return 0; put_main_pdev: platform_device_put(si4713_pdev); v4l2_device_unregister_subdev(&sdev->sd); free_ctrls: v4l2_ctrl_handler_free(hdl); exit: return rval; } /* si4713_remove - remove the device */ static void si4713_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct si4713_device *sdev = to_si4713_device(sd); platform_device_unregister(sdev->pd); if (sdev->power_state) si4713_set_power_state(sdev, POWER_DOWN); v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(sd->ctrl_handler); } /* si4713_i2c_driver - i2c driver interface */ static const struct i2c_device_id si4713_id[] = { { "si4713" , 0 }, { }, }; MODULE_DEVICE_TABLE(i2c, si4713_id); #if IS_ENABLED(CONFIG_OF) static const struct of_device_id si4713_of_match[] = { { .compatible = "silabs,si4713" }, { }, }; MODULE_DEVICE_TABLE(of, si4713_of_match); #endif static struct i2c_driver si4713_i2c_driver = { .driver = { .name = "si4713", .of_match_table = of_match_ptr(si4713_of_match), }, .probe_new = si4713_probe, .remove = si4713_remove, .id_table = si4713_id, }; module_i2c_driver(si4713_i2c_driver);
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